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2219 Aluminum vs. Grade 2 Titanium

2219 aluminum belongs to the aluminum alloys classification, while grade 2 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 2219 aluminum and the bottom bar is grade 2 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 2.2 to 20
23
Fatigue Strength, MPa 90 to 130
250
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
38
Shear Strength, MPa 110 to 280
270
Tensile Strength: Ultimate (UTS), MPa 180 to 480
420
Tensile Strength: Yield (Proof), MPa 88 to 390
360

Thermal Properties

Latent Heat of Fusion, J/g 390
420
Maximum Temperature: Mechanical, °C 230
320
Melting Completion (Liquidus), °C 640
1660
Melting Onset (Solidus), °C 540
1610
Specific Heat Capacity, J/kg-K 870
540
Thermal Conductivity, W/m-K 110 to 170
22
Thermal Expansion, µm/m-K 22
9.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28 to 44
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 81 to 130
7.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
37
Density, g/cm3 3.1
4.5
Embodied Carbon, kg CO2/kg material 8.2
31
Embodied Energy, MJ/kg 150
510
Embodied Water, L/kg 1130
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.6 to 60
92
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 1060
600
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 44
35
Strength to Weight: Axial, points 16 to 43
26
Strength to Weight: Bending, points 23 to 44
28
Thermal Diffusivity, mm2/s 42 to 63
8.9
Thermal Shock Resistance, points 8.2 to 22
32

Alloy Composition

Aluminum (Al), % 91.5 to 93.8
0
Carbon (C), % 0
0 to 0.080
Copper (Cu), % 5.8 to 6.8
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 0 to 0.3
0 to 0.3
Magnesium (Mg), % 0 to 0.020
0
Manganese (Mn), % 0.2 to 0.4
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Silicon (Si), % 0 to 0.2
0
Titanium (Ti), % 0.020 to 0.1
98.9 to 100
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0 to 0.1
0
Zirconium (Zr), % 0.1 to 0.25
0
Residuals, % 0
0 to 0.4